144 NAT! -RE SKETCHES IN TEMPERATE AMERICA 



every kind of color disposed in elegant patterns, and exhibiting 

 almost as much variety and beauty as among insects and 

 birds, yet here, not only is sexual selection out of the question 

 but the need of recognition and identification by others of the 

 same species seems equally unnecessary." 



After the larvae are full fed they spin parchment-like 

 cocoons, which are oval, almost globular, and are protected by 

 being flattened against the branch to which they are affixed. 

 They are brown in color and simulate the liark. Just 

 before the moth escapes from the cocoon, the larva prepares 

 the way by cutting a circular flap at one end which the moth 

 afterwards pushes open from within. The color of the small 

 moth is dark, rich reddish brown, and ii has a pair of twin 

 golden spots near the apex of the forewings. These spots are 

 nearly united, forming a short line in the female. In the male 

 there are two more near the base of the wings beneath the 

 median vein. 



A row of Saddle-back Caterpillar.^. 



